CVE-2012-4421
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does...
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does not perform a capability check, which allows remote authenticated users to bypass intended access restrictions and publish new posts by leveraging the Contributor role and using the Atom Publishing Protocol (aka AtomPub) feature.
Exploit likelihood
What each source reports
NVD Score used
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does not perform a capability check, which allows remote authenticated users to bypass intended access restrictions and publish new posts by leveraging the Contributor role and using the Atom Publishing Protocol (aka AtomPub) feature.
- Record
CVE-2012-4421- CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:P/A:N - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does not perform a capability check, which allows remote authenticated users to bypass intended access restrictions and publish new posts by leveraging the Contributor role and using the Atom Publishing Protocol (aka AtomPub) feature.
- Record
CVE-2012-4421- Updated
- 2026-11-02
EUVDEUVD-2012-4356 No score
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does not perform a capability check, which allows remote authenticated users to bypass intended access restrictions and publish new posts by leveraging the Contributor role and using the Atom Publishing Protocol (aka AtomPub) feature.
- Record
EUVD-2012-4356- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v9p6-jxgm-w55j No score
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does...
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does not perform a capability check, which allows remote authenticated users to bypass intended access restrictions and publish new posts by leveraging the Contributor role and using the Atom Publishing Protocol (aka AtomPub) feature.
- Record
GHSA-v9p6-jxgm-w55j- Updated
- 2026-11-02
OSV No score
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does not perform a capability check, which allows remote authenticated users to bypass intended access restrictions and publish new posts by leveraging the Contributor role and using the Atom Publishing Protocol (aka AtomPub) feature.
- Record
CVE-2012-4421- Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-4421 No score
The create_post function in wp-includes/class-wp-atom-server.php in WordPress before 3.4.2 does not perform a capability check, which allows remote authenticated users to bypass intended access restrictions and publish new posts by leveraging the Contributor role and using the Atom Publishing Protocol (aka AtomPub) feature.
- Record
DEBIAN-CVE-2012-4421- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-4421 is a medium vulnerability (CVSS 4.0) in Wordpress, published September 14, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.90%, the 79th percentile. Fixed in wordpress 3.4.2+dfsg-1.
References
openwall.com/lists/oss-security/2012/09/13/4
core.trac.wordpress.org/changeset?old_path=%2Ftags%2F3.4.1&old=21780&new_path=%2Ftags%2F3.4.2&new=21780
codex.wordpress.org/Version_3.4.2
nvd.nist.gov/vuln/detail/CVE-2012-4421
github.com/advisories/GHSA-v9p6-jxgm-w55j
security-tracker.debian.org/tracker/CVE-2012-4421